Plunger-rod



W. W. BODINE AND H. L. PATRICK.

PLUNGER ROD.

' APPLICATION FILED JULY 18,1919.

Patented Mar. 30, 1920.

' [/2 Ver: 20/5 I aaii/ze a Eric/Z WILLIAM w. min AND HOUSTON L. PATRICK, OF OILTON, OKLAHOMA.-

PLUNGER-ROD.

To all whom ma concern:

Be it known that we, WILLIAM W. BODINE and. HOUSTON L. PATRICK, citizens of the United States, residing at Oilton, in the county of Greek and State of Oklahoma, have invented certain new and useful Improvements in Plunger-Rods; and we do hereby declare the following to'be a full, clear, and exact description of the invention,

such as will enable others skilled in the art.

to which it appertains to make and use the same.

Our invention relates to improvements in pumps adapted for extracting fluids from the ground.

An important object of this invention is to prolvide a well purmp having cushioning means interposed in the plunger rod for lessening the strain on the upward movement of the plunger rod.

A further object of the invention is to provide novel means for mounting the cushioning means for the plunger rod of the.

.pump whereby the same may be readily apillustration is shown a preferred embodiplied or removed for purpose of replacement and so forth.

Otherobjects and advantages of the in-' vention will be apparent duringthe course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals are em loyed to designate like parts throughout t e same,

Figure 1 1s a front elevation of a plunger rod embodying our invention,

Fig. 2 is a horizontal section taken on line 22 of Fig. 1, and,

Fig. 3 is a plan view of a locking block embodied in the invention.

In the drawing wherein for the purpose of lament of my invention, the numeral 5 designates a plunger rod of a well pump. The

plunger rod is connected to a beam or other source of power 6 through the medium of a cross T 7. The cross T 7 has connected thereto a pair of spaced parallel rods 8. Laterally projecting shoulders 9 are carried byffitjhe cross T 7 and are provided with openings receiving the upper end portions of the rods 8. Locking nuts 10 are arranged on opposite sides of the shoulders -9 and have threaded engagement with the upper end portions of the rods 8. The lower end portions of the rods 8 extend through a cross head 11 and are connected thereto by nuts Specification of Letters Patent.

Applicationflled July 18, 1919. Serial No. 311,714. A

Patented Mar. 30, 1920.

12. The-cross head His rovided with an opening 13. opening out t rough its upper and lower sides and out through one vertlcal side. The plunger rod 5 is extended through the opening 13 and is adapted to be applied and removed through theopen vertical side of theopening 13. The upper end portion of the p unger rod 5 is ad ustably extended through a second cross head 14 having openmgs 15' receiving the spaced parallel rods 8 for sliding movement. A locking block 16 clearly shown in Fig. 3 is provided with an openmg 17 receiving the u per end portion of the plunger rod 5. The locking block 16 is provided with a screw threaded shank 18 receiving a locking member 19 having a pair of handles 20. Upon tightenin the locking member 19 on the shank 18, theilock 16 is forced into gripping enga ment with the upper end portion of the ro ,15 and retains the same in an adjusted position. -A coil spring 21 of a reasonable stoutness is arranged between the cross heads 14 and 11 and is adapted for alleviating the strain on the plunger rod 5 on its upward movement. As the result of the pressure of the fluid on the plunger head, the cross head 14 may partake of a downward movement with relation to the rod 8 on the upward movement of the plunger rod.

When it is desired to remove the plunger rod, the same may be readily done by pass- I ing the plunger rod out through the open vertical side of the opening 13.

While we have shown and described the preferred embodiment of our invention, it is understood that such minor changes in ar rangement and construction of parts may be made as will remain within the spirit of the invention and the scope of the appended claims:

Having thus described our invention, what we claim is 1.' A pump including a plunger rod, upper and lower cross members, spaced rods connecting the upper and lower cross members, said lower member having an opening.

spaced rods extending upon opposite sides of'the plunger rod, a cross head slidably carried by the spaced rods and provided with a cutout forming a pocket intermediate the spaced rods, a block slidably mounted in the pocket for movement transversely of the cross head and provided with a threaded stem extending through the cross head, the f lun er rod extending through the cross hea and through the block, and a locking element screwed upon the outer end portion of the threaded shank.

; 3'. A ump including spaced rods, a cross head'shda'bly mounted upon the rods and provided with a 'cutout forminga. termediate the rods, a block slidab y mountcket ined in the pocket for movement transversely of the cross head, a plunger rod extending between the spaced rods and through the cross head and a block slidably mounted therein, and means for adjusting the block in the cross head and retaining the block in an adjusted position for clam ing engagement with the plunger rod in rm engagement with the cross head. V

In testimony whereof we afiix our signatures in presence of two witnesses.

i WILLIAM W. BODINE;

Witnesses HOUSTON L PATRICK. 

